enabled N speed on 4965AGN by switching to AES security mode
Here's what I did. 1st I upgraded the driver from Intel to the latest version (this might not be necessary, try step two below 1st). I have vista (yes I know) so in my case I clicked on the active wireless connection, then view status. I use WPA2 security. I've been under 54mbps too all this time and I didn't know it. Please note my internet connection is 15mbps so the only time I would see a difference is when I navigate and transfer data on my network over wifi. Anyway, when I click on status I see the speed at 54mbps. I clicked on wireless properties. There's a connection tab and a security tab. Under security, I switched from encryption type TKIP to AES (the one mentioned on Intel site) without making any other changes to my router (Dlink Dir-655) and when I come back to the connection properties window, the speed has jumped to 130mbps. This could be higher for you depending on your wireless router.